BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a sharpening rod conventionally used for sharpening knives.
FIG. 2 is a sectional schematic view showing a conventional sharpening rod being applied to sharpen a knife.
FIG. 3 is a perspective view showing the application of the conventional sharpening rod in sharpening a pair of scissors.
FIG. 4 is a schematic view showing the sharpening corner in contact with an object to be sharpened.
FIG. 5 is a perspective view of the sharpening device in accordance with the present invention.
FIG. 6 is a schematic sectional view showing the sharpening between the sharpening corners of the sharpening device of the present invention.
FIG. 7 is a perspective view of another preferred embodiment of the present invention.
FIG. 8 is a schematic sectional view showing the application of the sharpening device shown in FIG. 7 of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The following description are of exemplary embodiment only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.
Referring to FIGS. 5 and 6, there is shown a knife sharpening device 70 which is a cornered elongated body having a first and a second end. The first end can be mounted with a handle (not shown), and the second end has a converging sloping section 78 for use on the edge 1 of a small knife.
In accordance with the present invention, at least one corner of the knife sharpening device 70 has a cornered slot 71 which extends axially, and the connection between the top end of the side of the corner slot 71 and the circumferential surface form into a first sharpening edge 75 and a second sharpening edge 76. The first and the second sharpening 75, 76 can contact closely with the edge 1 of the knife, as shown in FIG. 6 so that the first and second sharpening edge 75, 76 can sharpen the edge 1 of a knife.
Accordingly, the present knife sharpening device improves sharpening efficiency in sharpening a knife or the like.
The application of the knife sharpening device is shown in FIG. 6. The first sharpening edge 75 and the second sharpening 76 at the lateral sides of any of the cornered slot 71 of the knife sharpening device 70 are at the same time in contact with the edge 1 of a knife and the first and second sharpening edge 75 and 76 are moved to and fro to sharpen the edge 1 of the knife. Due to the dual polishing action of the sharpening edge 75, 76, the efficiency of sharpening a knife is improved.
In another preferred embodiment, as shown in FIGS. 7 and 8, the knife sharpening device is a cylindrical rod and the circumferential edge of the rod is provided with at least one sectioned slot 51 and the sectioned slot 51 is extended axially, and the connection between the top end of the two lateral walls of the sectioned slot 51 and the circumferential edge is formed into a first sharpening edge 55 and the second sharpening edge 56, wherein the first sharpening edge 55, 56 can at the same time in contact with the edge of the knife 1, as shown in FIG. 8, such that the first and second sharpening edge 55, 56 can at the same time sharpen the edge 1 of the knife in to and fro movement. Furthermore, at least one end of the knife sharpening device 50 has a converging conic section 58 for application on the edge of a smaller knife. The efficiency of sharpening on the edge of knife is significantly improved as compared to the conventional knife sharpening device.
In a preferred embodiment, the shape of the knife sharpening device is a four cornered elongated body.
It will be understood that each of the elements described above, or two or more together may also find a useful application i other types of methods differing from the type described above.
While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.
Patent Application
20070289410
